Evenness tester



Dec. 22, 1925. 1,566,949

H. s. WYCKOFF EVENNESS TESTER Filed Oct. 51, 1924 I lllll I :III

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I II I S i l WITNESSES l INVENTOR Hiya-6 5. PPS axon ATTORNEYS Patented Dec. 22, 1925.

UNHTE STATEEi HOLMES STOUT WYCKOCFF, OF LITTLE FALLS, NEW JERSEY;

EVENNESS TESTER.

Application filed October 31, 1924.

To all whom it may concern:

Be it known that 1, Houses S. Nrcnorr, a citizen of the United States, and a resident of Little Falls, in the county of Pass-aic and State of New Jersey, have invented a new and Improved Evenness Tester, of which the following is a full, clear, and exact descrip' tion.

This invention relates to evenness testers and more particularly to an apparatus which not only tests the evenness of: thread, yarn and the like, but functions to make a record so that the user of the thread or the yarn may definitely know just what portions of the thread are uniform and where unevenness occurs.

A device of this kind is 01" vital imporance as it is a well known fact that in weaving, particularly in the use of raw silk thread and the like, where a section of thread is uneven or of a different diameter or thickness, such a portion of the thread will cause a distinct line to appear in the woven goods but more especially in knitted fabrics. lVith an apparatus of this character the manufacturer can determine whether his purchases of certain materials will be suitable for defined purposes. For example, the silk inanu'tac turer can test his silk to see if it is sulliciently even for raw silk weaving. It is even possible to discard such portion or portions as may seem advisable considering the use to which the material is to be put.

The object, therefore. of the invention is to provide a device of the character stated which automatically records the thickness of diameter of the thread or yarn throughout its length.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and ar rangcments of parts, which will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings- Figure 1 is a top plan or edge view of my improved apparatus:

Figure 2 is a front elevation or plan thereof;

Figure 3 is an edge view taken at right angles to Figure 2.

1 represents a supporting board which is positioned at right angles to a guide 2, over which a movable chart 3 is positioned. This chart 3 may be of paper or any other suitable material continuously fed in any ap- Serial No. 747,074.

proved manner and preferably held flat and smooth by an idle roll 1 mounted on the guide 2.

The board 1 supports a bar 5 which is rigidly secured thereto by screws 6 or other suitable securing means, and this bar 5 at its upper or free end is bifurcated, as indicated at 7, to receive and accommodate a roller 8, the latter mounted upon a short shaft 9 hav ing hearings in the bifurcated upper end 7 of the bar 5.

This roller 8 is mounted slightly off center, or, in other words, is eccentrically mounted, and a lever 10 is secured across the pivotal center of the roller and secured thereto by rivets or other securing means 11. This lever 10 carries at one end a pen 12 or other marking device which engages the chart 3. On the opposite end of the lever 10 a weight 13 is provided and is preferably adjustable so as to counterbalance the lever.

The board 1 is provided with a pair of fixed brackets 1 1- and 15 which support a bar 16. This bar 16 has a bolt 17 fixed therein and projected through the upper bracket 14 and is screw threaded at its free end, as shown at 18, to receive a nut 1!). A coil spring 20 is located on the bolt 17 between the bracket M and the nut 19 so as to hold the bar by resilient tension against the bracket 14-. The lower bracket .15 provides mounting for an adjusting screw 21 which bears at its end against the bar 16 so that by adjusting this screw 21 the angular disposition of the bar 16 "an be 'aricd so as to vary the position of: a roller 22 mounted in the upper end of the bar 16. This bar 16 also has a pin projecting therefrom and against which the lever 10 engages, limiting the movement of the lever and the turning movement of the wheel 8 in one direction.

The board 1 is provided. at its lower portion with a friction block 24: over which the cord or yarn 25 is fed and is guided in a series of eyes 26. This friction block 24 exerts sufticient tension on the thread or yarn to maintain the same sufiiciently taut as the thread is drawn over the same. The friction block 24: may, of course, be made in various ways but I have shown the same as consisting of a felt-covered projection which will answer all purposes.

To insure a proper positioning of the wheel 8 and to return it ,to position after til) "engaging the face thereof.

being moved by the thread, I provide. a spring 27 which is connected to the bar 5 in any approved manner. I have shown a screw 28 for the purpose and the free end of this spring 27 engages a pin 29 on wheel 8 tending to turn the same in a counterclockwise direction.

In operation, the screw 21 is adjusted so as to position the wheel 22 properly spaced from the wheel 8 in order to accommodate the normal or desired thickness of the-thread or yarn, and the thread or yarn'is positioned through the eyes 26 and located between the rollers 22 and 8, as indicated clearly in Figure 2. It is to be understood, of course, that during the operation the chart 3 is continuously moving and the pen 12 is As the thread or yarn moves, if its thickness is uniform, there will be no appreciable change in the position. of the pen but when an increased thickness of yarn reaches a position between the rollers 22 and 8 it will cause the roller 8 to turn slightly and carry with it the lever 10, causing the pen 12 to move transversely of the chart. It will thus be noted that the exact diameter or, in other words, the

' evenness or uneveness of the thread will be indicated automatically on the chart.

Various slight changes and alterations might be made in the general form of the parts described without departing from my invention, and hence I do not limit myself to the precise details set forth but consider myself at liberty to make such slight changes and alterations as fairly fall within the spirit and scope of the appended claims.

Iclaim:

1. An apparatus of the character described, comprising a support, a bar fixed to thesupport, an eccentric roller carried by said bar, a pair of brackets fixed to the support, a second bar, a bolt fixed to the intermediate portion of the second bar and projecting through one of the brackets, a nut on the bolt, a spring on the bolt interposed between the nut and the bracket, an adjusting screw located in the other bracket and engaging the second mentioned bar, a member on the second mentioned bar adapted to be adjusted relative to the periphery of the eccentric roller, and means for guiding a continuously moving thread between said member and the periphery of the eccentrically mounted roller whereby when an enlargement or thickened portion of the thread engages the eccentric roller it vill cause the latterto turn and indicate an unevenness in the thread.

2. An apparatus of the character described, comprising a support, a bar fixed to the support, an eccentric roller carried by said bar, a pair of brackets fixed to the support, a second bar, a bolt fixed to the intermediate portion of the second bar and projecting through one of the brackets, a nut on the belt, a spring on the bolt interposed between the nut and the bracket, an adjusting screw located in the other bracket and engaging the second mentioned bar, a member on the second mentioned bar adapted to be adjusted relative to the periphery of the eccentric roller, means for guiding a continuously moving thread between said member and the periphery of the eccentrically mounted roller whereby when an enlargement or thickened portion of the thread engages the eccentric roller it will cause the latter to turn and indicate an unevenness in the thread, a marker fixed to move with the eccentric wheel, and a spring normally holding the eccentricwheel against turning movement.

HOLMES STOUT VVYCKOFF. 

